I've got a duckling that just hatched yesterday (or the day before, not sure, all of this batch looks basically identical). She is really tired and rather weak. She will drink if I dip her beak in the water but I haven't seen her eat. Her breathing is also a bit labored and sometimes there is a bit of a clicking noise when she breathes. She was fine yesterday but last night we had a storm and a cold front came through. I've been keeping them in a brooder with a heat lamp in our shed and its been fine till now but they were cold this morning so I've moved them inside. I've separated her from the rest (who are all doing fine) but what's wrong with her? And is there anything I can do? Also here is a picture of my new babies!